To the untrained eye, one rock looks like another. But for the geologists who study them, rocks tell stories. Whether rocks are igneous, sedimentary, or metamorphic, each one holds clues about Earth’s history and formation. From dynamic creation to wave battered erosion, get ready to discover the science of rocks and the people who love them.

On a dark night as you watch the sky with your friends, a rock with a fiery tail shoots across the sky. A comet! Asteroids and comets hurtle through space, sometimes a little too close to Earth. But did you know that they are linked to life on this planet? From the asteroid Ceres to Halley’s comet, blast into space and enter the lonely existence of asteroids and comets.

Plants may look innocent, but they’re sneaky, tricky, secretive little buggers. You could watch them all day and they would never move an inch. But hidden from your eyes, their roots, leaves, and blossoms are always working. From photosynthesis to reproduction, get ready to uncover the science of plants and the secrets that they keep.

With a fiery red explosion, a volcano becomes a disaster in the blink of an eye. Lava and ash shower down, covering the landscape for miles. Starting with molten rock beneath Earth’s surface, each eruption can cause incredible damage and destruction. From volcano formation to studying volcanoes, prepare to jump into a scalding look at volcanic eruptions.

What happens when criminals outgun the regular police force? Or when they threaten innocent hostages? Or when a riot spins out of control? In dangerous situations like these, SWAT teams are often the answer. With special training and gear, SWAT teams are ready to tackle whatever comes their way.

U.S. leaders need accurate information to make important decisions. They turn to the CIA to get it. Around the clock, members of the CIA are hard at work. As covert officers secretly gather intelligence, analysts are busy studying it. CIA scientists develop high tech spy gear. But no matter their job, CIA members share a common goal of keeping the country safe.

When dangerous missions call for an elite team of soldiers, the Green Berets are ready at a moment’s notice. From counterterrorism operations to enemy raids and spying missions, the highly trained and skilled men of the U.S. Army Special Forces are ready to do whatever it takes.

When missions call for a team of highly trained warriors, Rangers lead the way. Clearing airfields, conducting rescue missions, or engaging the enemy, the men of the 75th Ranger Regiment are ready to do whatever it takes.

When missions call for an elite team trained for quick, secret operations, they call in the Marines Special Operations Regiment. Training foreign soldiers, destroying weapons, or gathering enemy information, the men of MARSOC are ready to do whatever it takes.

When difficult missions require highly skilled, specially trained military men, the Navy SEALs are up for the task. SEAL teams are trained to complete missions from the sea, land, and air. Gathering secret enemy information, training foreign soldiers, or conducting an ambush, SEALs are ready to do whatever it takes.